Maverick Arms has discovered that a small number of Maverick Hunter Over/Under 12-gauge shotguns (SKU 75445) have been marked incorrectly. The chamber marking indicates that these shotguns are chambered for 3½-inch shells; however, the chambers are manufactured for 2 ¾-inch and 3-inch shells. All Maverick Hunter shotguns are manufactured with 3-inch chambers, not 3½-inch chambers.

If you purchased a Daniel Defense rifle From Parker Arms your serial # has been checked and your rifle is NOT subject to the recall. Please feel free to recheck at the link below. Also the full letter from DDI.

Let me first say that if you purchased a Remington 887 shotgun from Parker Arms & Gunsmithing your firearm is not affected by this recall. I have checked our records and verified the serial #'s of the 887"s sold here. The 887's sold here DO NOT fall into the recall group.
If you purchased an 887 elsewhere, or know of someone with a Remington 887, STOP using it immediately until you go to the link below and check the serial #.

This debate will go on forever and with good cause.
Personally I prefer not to use steel cased ammo in my firearms, I am meticulous about the care of my guns and prefer to use only quality brass cased ammo in them.
Here is a link to an article on LuckyGunner.com that does an excellent job of testing both brass and steel cased ammo in identical firearms and comparing the results.
This is a long read with tons of data that may end the debate in your own mind. It has reinforced my reasons for choosing the ammo I do.